Quinazoline derivatives

ABSTRACT

QUINAZOLINE DERIVATIVES WHICH CONTAIN AN AMINO RESIDUE IN 4-POSITION AND OPTIONALLY OTHER SUBSTITUENTS ARE OF VALUE AS DIURETICS. THEIR PRODUCTION AND USE IS DESCRIBED.

United States Patent 3,772,295 QUINAZOLINE DERIVATIVES Patented Nov. 13, 1973 tives are prepared by reacting a 4-quinazolone of the formula Max Fernand Robba, Paris, Ren Henri Pierre Marcy, R2

Espins, Calvados, and Denise Jeanne Claude Duval,

Sartrouville, Yvelines, France, assignors to Innothera, 5 R NH Val de Marne, France N0 Drawing. Filed Feb. 16, 1971, Ser. No. 115,797

Claims priority, application France, Feb. 16, 1970,

7 1 wherein R, R and R have the meanings given to them (307d 99/ 02 2 1 above, with phosphorus oxychloride, and reacting the CL 260-2565 R Clams product obtained with the primary or secondary amine from which the group R is derived, and when desired, ABSTRACT OF THE DISCLOSURE converting the quinazoline obtained to a pharmaceutically acceptable salt by reaction with an acid.

Quinazohne derivatives WhlCh contain an amino residue in 4-position and optionally other substituents are of value 5 2 texamp 1e W 3 Serve to i g the as diuretics. Their production and use is described. ven empera ures are m egree can lgra EXAMPLE 1 The present invention relates to quinazoline derivatives (21) 4-chloro-quinazoline which may be used therapeuticallly as diuretlcs. 10 g of 4 oxo quinazolone, 100 cc. of phosphorus These denvatlves correspond to the formula chloride and 10 g. of phosphorus pentachloride are mixed.

The mixture is heated to reflux for 4 hours. The product R is evaporated to dryness in vacuo hydrolysed with 200 25 to 300 g. of iced water. The precipitate is separated, R N washed with water, dried and recrystallised from isopropanol. Yield=72 The product melts at 98.

1 (b) 4-meta-trifluoromethylanilino-quinazoline wherein A solution of 5 g. of 4-chloroquinazoline and 5 cc. of meta-trifluoromethylaniline in 60 cc. of absolute ethanol 1 TePTeentS ammo group denved ,from one of the is heated to reflux for 3 hours. The product is evaporated followms P secondafy ammes: ls'methoxy' to dryness in vacuo and 50 cc. of water is added to the ethylamme, l ethoxyefllylamme, methofiypropyl' residue. After making alkaline by an aqueous normal soluamlne, 'Y' Y'P '?P PF f tion of soda, it is extracted with chloroform. The solution methylenedmme, tnfluommethyl'amlme furfurlamlne is dried over sodium sulphate and the solvent evaporated.

(furyl3 Y tef-Fahydmfurfurylamme and (c) The residue obtained is dissolved in acetone and tetrahydl'ofufyl'3 methylamme, heated to reflux with 1.2 equivalents of oxalic acid. The R TePreentS elther a hydrogen atom or a Phenyl group 4 (m-trifluoromethyl-anilino)-quinazoline oxalate is recarrymg one Several substlfuems Such a methyl 4E0 crystallized from acetonitrile. White crystals of which the or methoxy radical, a chlorine or fluorine atom, a melting point is are obtained Yie1d=45% methylenedioxy group, or a radlcal derlvfid from P Other addition salts of this compound with pharmaceuthlophene, PYrldlne, plcollnea benzofuran or benzothlo' tically acceptable organic or mineral acids are obtained Phene: a naphthyl radlcal, and in the same way as for the oxalate.

R and R each represent an atom of hydrogen or of chlorine. EXAMPLES 2-13 The present invention also relates to the addition salts In the following table there are represented several comof these quinazoline derivatives with pharmaceutically pounds which are identified by the indication of the values acceptable organic or mineral acids. of the symbols of Formula I and which can be prepared According to the invention the above described derivain the manner described above.

TABLE I N R YR R N Melting Compound point, Yiel Number R R1 R2 deg. percent Solvent of crystallisation 2 H NH-CHz-CHz-OCH; H 129 Aeetonitrile. 3- H NH-OHPCHPOCPH5 (acid maleate) H 124 45 Ethanol (1) plus ethyl-ether (1). 4 H NH-CH:CHz-GH:OGH3 (acid maleate) H 136 35 Do.

5- H NHCH:CHr-CHa-OC:H5 (acid tartrate) H 40 Ethanol (1) plus ethyl-ether (2).

TABLE IContinued Melting Compound point, Yield, Number R R1 R2 deg. percent Solvent; of crystallisation 6 H H 217 60 Methanol.

NH (acid oxalate) 7-- H H 133 60 Ethanol.

N (acid lumarate) s H H 170 60 Do.

NH-CHzT 9 H 0 (acid malcate) H 120 50 D0.

NH-OHz-l 10- S NH CH 0 C1 130 40 Oyclohexane.

11 S 0 Cl 151 30 Do.

- NHCHz( 12. s 0 H 163 50 Do.

NH-(JHTb 13 S O H 110 Do NH-CH-T The compounds 05 Examples are named as TABLE IL-DETERMINATION OF THE ACUTE TOXICITY lows: IN THE MOUSE [The quinazoline derivatives were injected intraperltoneally, using three 4(fl-methoxy ethyl amino)-quinazoline ammalsfor dose] 4([3-ethoxy ethyl amino)-quinazoline gg i g gggggg; 4('y-methoxy propyl amino)-quinazoliue Compound Dose in g./1OO ml or alter 4('y-ethoxy propyl amino)-quinazoline number Suspenslon 5 days 4(cyclopentyl amino)-quinazoline 2 3g g3 g 4 (hexamethylene-imino -q u inazoline 300 0 100 4(meta-tnfluoromethyl an1hno)-qu1nazol1ne 3 3o 1 0 0 4(furfurylamino)-quinazoline 50 110 0 4(tetrahydr0furfurylamino)-quinazo1ine 100 0 Z-(a-thienyl)-4-furfurylamino quinazoline 4 3 1% g Z-(a-thienyl)-4-tetrahydrofurfurylamino quinazoline 2-(a-thienyD-4-furfurylamino-7-chloro quinazoline 6 3g i-g g 2- u-thienyl) -4-tetrahydrofurfurylamino-7-chloro- 300 a: 0 100 quinazoline 1 300 M 0 $88 a i The new derivatives of the invention have been made the subject of a pharmacological study, showing their 8 233 2:8 3 diuretic properties. 10 H w 300 3 0 0 (I) Acute toxicity.-The acute toxicity of the quinazo- 600 56 line derivatives has been studied in the mouse, by the in- A 300 3 0 0 traperitoneal route, for certain compounds chosen by 600 3.0 33 way of example. These products have been administered 900 100 in suspension in a dilute aqueous solution of carboxy- 13 288 38 methyl cellulose. Their toxicities are low. The various 900 1 66 results obtained are assembled in Table II.

(H) Diuretic activity.-In the rat deprived of food and drink 'for hours, the administration of a substance possessing diuretic properties, previously to the ingestion of ml. of an isotonic solution of sodium chloride per kg. of body weight, provokes a significant increase in the volume of urine excreted during the hours which follow the ingestion of the physiological serum.

Eight rats were used for each dose of the product studied, the animals being grouped in pairs in cages for metabolism testing.

The treated rats received, by the digestive route, the quinazoline derivatives (X) and the selected reference products (R), furosemide and acetazolamide, minutes before the physiological serum, one lot of test rats receiving, for comparison, 5 ml./kg. of the isotonic solution of NaCl.

The products (R) or (X) were administered in the form of a suspension in a dilute aqueous solution of carboxymethyl cellulose, at a constant volume of 5 ml./

The volume of urine recovered was measured 5 hours after the ingestion of 25 ml./kg. of physiological serum.

The average diuretic activity of the reference products (R) and of the quinazoline derivatives (X) is expressed by the ratios:

volume of urine of the rats treated by R volume of urine of the control test rats T and volume of urine of the rats treated by X volume of urine of the control test rats T For example, a substance having a diuretic activity expressed by the FIG. 2 provokes in the treated rats the emission of a volume of urine equal to twice that which is observed in the control rats.

The results obtained with certain derivatives, taken by way of example, are indicated in Table III and show that there is a clear increase in the diuresis.

TABLE III.--DIURETIC ACTIVITY IN THE RAT BY DIGES TIVE ROUTE [The quinazoline derivatives, furosemide and acetazolamide comparatively studied in the same test were administered by the digestive route 30 minutes before the isotonic solution of sodium chloride] The new compounds of the invention may be used in human therapy and in veterinary therapy as a result of their diuretic properties. This diuretic activity serves for the elimination of water and electrolytes with an effect 'uresis being moderated.

In particular they may be administered in cases of hydrosodic retention which are produced in: decompen' sated cardiopathy with peripheral and visceral oedemas, oedemas of cardiac origin, oedemas of renal origin, oedemas and ascites of hepatic origin, acute oedema of the lungs, dyspnoea of cardiac insufliciency, acute asystolia, arterial hypertension, and heavy surcharge by hydrolipopexia.

The new derivatives may be presented for oral administration or parenteral administration in man or animals, particularly in association with excipients appropriate to these routes.

Thus, for example, they can be presented in the form of tablets, capsules, gelules and injectable solutions. The invention includes, as will be understood, pharmaceutical compositions which contain one or more of these new derivatives.

The daily dosage may, according to the case be from 20 to 800 mg.

An example of a pharmaceutical composition is the following:

G. 2-u-thienyl-4-furfurylamino-quinazoline 0.100 Lactose 0.100 Starch 0.095 Magnesium stearate 0.005

to make a tablet weighing 0.300 g.

We claim as our invention: 1. A quinazoline derivative having the formula Ra N References Cited UNITED STATES PATENTS 1/1972 Hess 260-256.5 R

OTHER REFERENCES Burch: Chem. Abstracts, 64219608c (1966).

RICHARD J. GALLAGHER, Primary Examiner US. Cl. X.R.

260-251 QA, 256.4 Q; 424-251 

